This is an ok problem. Now, add more test cases.
Number of 1s in the Binary Representation of a Number
Back to basics 25 - Valid variable names
Vectorize the digits of an Integer
The sum of the numbers in the vector
Area of a triangle
Find remainder when x is divided by 3
modulus of a number
first element of matrix
find a specific element from an matrix
find the mean of all elements in a matrix
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